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Originally published in March 2021. Last updated on January 22nd, 2025.
Running an HVAC business can be stressful—but the good news is that your phone can take on some of the load. Thanks to some clever apps, you can simplify your workflow, save time, and make the daily grind a whole lot smoother.
Whether you’re tackling tricky on-site diagnostics, crunching numbers for load calculations, or managing invoices and team schedules, there’s an app to help.
Check out our list of 12 must-have HVAC apps that’ll make your job easier both in the field and behind the scenes.
Find the best HVAC apps for your business:
How we chose the best HVAC apps
To find the best HVAC apps, we looked for apps with useful features that are easy to use and designed to make common tasks faster and more efficient. Tasks that we considered include:
- Diagnostics
- Calculations
- Scheduling
- Invoicing
From there, we reviewed some of the top apps in both the Apple App Store and the Google Play Store, paying close attention to each app’s ratings.
We looked to HVAC professional forums to see what apps were currently popular in the HVAC industry. We also checked user reviews from sites such as GetApp and Capterra, to see what experienced HVAC pros had to say.
The result is this curated list of the best apps for HVAC techs. Whether you’re in the field or managing operations from your office, these apps are built to save you time and make your job easier.
HVAC calculator apps
When it comes to HVAC work, precision is everything—and that’s where calculation apps come in.
These handy tools take the guesswork out of tricky measurements, helping you with refrigerant calculations, airflow requirements, and more with just a few taps.
1. Ref Tools
Ref Tools by Danfoss is the go-to HVAC app for many air conditioning techs who need refrigerant calculations, superheat tuning, and refrigerant information.
With easy-to-read pressure-temperature charts, Ref Tools is great for calculating pressure and temperature ratios on the job. You can also use Ref Tools to:
- Educate yourself and improve your HVAC knowledge
- Find and compare climate-friendly refrigerants
- Search for spare HVAC parts in the Danfoss product catalog
- Get specs and documents for specific Danfoss HVAC products
2. HVACR Check & Charge
HVACR Check & Charge is a free calculator app that helps you measure refrigerant charges for A/C units on site.
You can choose from a dropdown list of common refrigerants and enter your system temperatures for superheat, subcooling, or airflow.
The app will use the values you enter to determine the right system charge and tell you if you need to alter the charge amount. This reduces risk of errors and saves valuable time for building relationships with your customers.
3. HVAC Load Plus
HVAC Load Plus calculation app can save you lots of time on installs. Use this HVAC calculator app to determine heating and cooling block loads for commercial and residential buildings.
But it’s not just a load calculator app. HVAC Load Plus also lets you share project details and reports with your clients and access complete heating and cooling reports.
You can even store information about your HVAC products on a remote server and share it with other employees.
Android users can get HVAC Quick Load Plus, a more basic version of the app that provides rule-of-thumb load calculations.
Troubleshooting and diagnostic apps
Sometimes, you need a little help determining the problem to find the ultimate solution for your customer.
To keep your HVAC systems in good shape, use one of these HVAC apps built for troubleshooting to identify system problems.
4. HVACR Fault Finder
HVACR Fault Finder helps with on-site compressor troubleshooting for refrigerators and air conditioners. Use the app to find common A/C faults so you can identify what’s causing an issue in a customer’s system.
You can access troubleshooting guides for specific unit types right from the app, which include tips and interactive flow charts. You’ll also find product engineering guides, manuals, and videos.
5. Danfoss Troubleshooter
Danfoss Troubleshooter helps you diagnose and resolve typical HVAC/R system issues. This app can save HVAC technicians and installers lots of time on the job.
First, it shows you a list of common symptoms your system can experience—then it helps you narrow down the problem and offer possible fixes. The app’s design makes it easy to move back and forth between the system diagnosis and solutions.
Plus, you can download Troubleshooter’s database to access offline when you don’t have internet access.
Business management apps
Install an HVAC business app that helps you simplify tasks outside of the job site. The best app for HVAC business can help with:
- Overseeing team productivity
- Scheduling your techs
- Collecting payment
6. Jobber
Jobber is HVAC business software that helps you dispatch HVAC techs, manage jobs, invoice customers, collect payments, and more. You can manage your job workflow while moving between properties using the Jobber HVAC mobile app.
Use Jobber to seamlessly schedule, reschedule, or reassign your HVAC techs with a drag-and-drop calendar. Track labor time more effectively with Jobber’s automatic clock-in timers that start when your techs arrive at the job site.
One feature that makes Jobber the best app for HVAC technicians is the ability to create HVAC inspection checklists and installation checklists that your techs can check off while they work. This lets you control the quality of every job.
When you wrap up a job, turn your estimates into invoices in just a few clicks. From there, Jobber lets you provide flexibility to your customers by collecting payment online or in person.
Before Jobber, we were using paper invoices. Now, with everything all in one app, we invoice quicker and get paid a lot quicker.
You can also use Jobber to:
- Generate faster driving routes automatically when you dispatch your techs
- Quickly build HVAC estimates that include optional service packages and customer-friendly financing options
- Set up automatic follow-up texts and emails for your quotes, invoices, and visits
- Get instant access to business data to help make informed decisions with Jobber Copilot
READ MORE: 6 best HVAC CRM software to stay efficient and organized
7. Bluon HVAC
Bluon HVAC helps you find and order HVAC parts from local suppliers in one app.
When estimating a job or working on an HVAC system, you can use Bluon to look up the supplies you need for repairs, upgrades, or installations.
Use Bluon to easily search product manuals for over 300,000 HVAC parts. Plus, their technical support team is around 24/7 to help you find specific unit info.
8. Ply
Ply is inventory management software that is perfect for HVAC contractors struggling to keep track of parts and materials.
Ply allows you to implement systematic examination of existing HVAC equipment and inventory, or common purchases from an existing price book. The app also lets you scan materials and uses intelligent tracking to stay organized.
You can automate inventory control by defining conditions to trigger specific actions, such as low inventory notifications.
Pro tip: Integrate Ply with Jobber to combine your inventory workflows. For example link materials directly to jobs and invoices in Jobber with mobile scanning.
READ MORE: How to price HVAC jobs
9. QuickBooks Online
Every HVAC contractor needs an accounting app in their pocket. QuickBooks offers a mobile app that’ll help you keep your business finances healthy from anywhere.
Use the QuickBooks Online Accounting app to manage your invoices, expenses, income, reports, and payroll for your HVAC company.
QuickBooks’ mobile app is easy for users with all levels of accounting experience—so it’s a great tool to lean on whether you have an accountant or not.
Plus, connect QuickBooks with your HVAC business software, like Jobber, to keep your finances up to date and eliminate double entry.
10. CallRail
CallRail is a must-have tool for your HVAC marketing strategy. The app helps HVAC businesses track and manage customer calls, providing valuable insights into marketing performance and customer interactions.
With CallRail, you can track which advertising channels are driving the most calls, ensuring you spend your marketing budget wisely.
CallRail is even more powerful when used with other field service management software. For example, use CallRail to gain a detailed view of HVAC leads and marketing sources within Jobber.
Training apps for HVAC professionals
Keeping your team’s knowledge and skills sharp is a must if you want to keep giving A+ customer service. Get your apprentices using these training and learning apps.
11. HVAC School
HVAC School is a free community that compiles and shares up-to-date HVAC/R training material and industry knowledge.
Complete with podcasts, quizzes, videos, and other resources, this is the perfect app for any HVAC contractor interested in professional growth. Contributors come from all over the U.S. and offer a variety of advice for HVAC pros.
12. SkillCat
SkillCat is a learning app and community for skilled trades pros. It has two programs for HVAC contractors:
- SkillCat HVAC School, an online trade school that prepares technicians for certification
- SkillCat For Companies, a service that helps business owners train, retain, and attract workers
When it’s time to hire or train new HVAC techs, consider using SkillCat for Companies. You can access over 450 hours of training material to create your own apprenticeship program and reports that track training progress.
If you’re an HVAC student or apprentice, use the SkillCat app to access essential HVAC and job site safety courses (including EPA 608 certification), boot camps, and 3D job site simulations.
READ MORE:How to Start an HVAC Business
The right apps can transform the way you run your HVAC business, making everyday tasks faster, easier, and more efficient.
These tools can help you save time, improve accuracy, and deliver better service to your customers. Test out some of these HVAC apps and take your productivity to the next level—because when your tools work smarter, so do you.
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